\begin{tikzpicture}
	\tkzDefPoints{0/0/O, 1.5/0.7/A, 1.5/0/B, 1.5/-0.7/C}
	\tkzDrawLines[add=0 and 0.5](O,A  O,B  O,C)
	\tkzDrawPoints[fill=black](O,A,B,C)
	\tkzLabelPoints[left](O)
	\tkzLabelPoints[above](A,B,C)
\end{tikzpicture}

